About the first thing that I can remember was geology. I used to collect rocks and geology seemed natural. My parents encouraged me by buying a beginning rock identification kit. But you have to be too smart to do rocks. You have to remember too much. I have a pretty poor memory.
So by the fifth or sixth grade I got interested in cars. Mechanical things. I built a powered cart, like a go cart, of my own design, and did automotive work on my brothers car. By high school I helped my neighbor rebuild his austin healey. But I was sort of put off by the grease and oil.
At this point I thought electronics might be good. I attempted several kits. But it turns out that I don't solder very well. I did a stint after high school as a surveyer. Good outdoor job. But you have to be outside in all weather. Civil engineers do surveying.
Eventually, I was drafted and spent 3 fun filled years working for uncle sam. After that it became time to do something. My father was a machinist, and he could have gotten me an apprenticeship, but they had an age limit and I was too old. I qualified for the GI Bill so I decided to go to college. Math was pretty easy for me, physics not impossible, so I took electronic engineering. In electronics they let you use books. You don't have to memorize everything.
The only similarity to my original desire and how I ended up was I had a college degree.